ANURAG MAAN and ROSHAN ABRAHAM Coronavirus infections in the South Asia sub-region surpassed the grim milestone of 15 million yesterday, a Reuters tally shows, led by India's record daily infections and vaccine shortages. South Asia - India, Bangladesh, Pakistan, Bhutan, Nepal, Maldives, and Sri Lanka - accounts for 11% of global cases and almost 6% of deaths. The region accounts for 23% of the world's population of 7.59 billion people. India, the country with the third-highest coronavirus total, accounts for over 84% of South Asia's cases and deaths. The world's second-most populous country reported 145,384 new cases on Saturday, the…